CN107063775A - A kind of simple type deep soil gas sampler and its method for sampling - Google Patents
A kind of simple type deep soil gas sampler and its method for sampling Download PDFInfo
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- CN107063775A CN107063775A CN201710127750.9A CN201710127750A CN107063775A CN 107063775 A CN107063775 A CN 107063775A CN 201710127750 A CN201710127750 A CN 201710127750A CN 107063775 A CN107063775 A CN 107063775A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2294—Sampling soil gases or the like
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Abstract
The invention discloses a kind of simple type deep soil gas sampler and its method for sampling；Discharge, the airway tube of several passages are distributed with including perisporium；One end of the discharge is sealed end, and other end connection airway tube is provided with triple valve in the end of airway tube；The internal perisporium of the discharge is pasted with one layer of waterproof ventilated membrane；The passage is divided into two groups and is linearly arranged on the tube wall of discharge opposite sides；Their straight line is parallel to each other, and is arranged along discharge length direction.Sampler can be arranged to different soil depth by this sampler according to test requirements document, gather different depth soil layer gas, to determine its gas concentration, so as to verify different depth soil gas distribution characteristics, the concentration gradient and diffusion rate of different depth soil gas are estimated.This sampler has good sealing property, and ambient atmosphere environment disturbs almost nil to it, and experimental result error is small and precision is high.
Description
Technical field
The present invention relates to agrology technical field, more particularly to a kind of simple type deep soil gas sampler and its sampling
Method.
Background technology
Various materials circulation in the ecosystem is significant, and especially global material circulation is to grind now
The focus studied carefully, the circulation of such as global carbon, wherein soil is one of most important research field.Soil as porous media,
A large amount of trace gaseous components (including CO is there is in the air stored in its space2、CH4、N2O etc.).Soil air is substantially
By air, but also there is small part to result from Biochemical processes in soil.Soil air is used as soil important composition composition
One of, it is of great importance for plant growth and Zinc fractions.Soil air research is agrology, environmentology, ecology, the hydrology
An importance in the disciplinary studies such as, geology, geography, and the collection of soil air is the base of soil air research
Plinth.
People have done numerous studies for the discharge of earth's surface gas, but to soil profile, deep soil gas
Research is rarely reported, and this is mainly the limitation for receiving laboratory apparatus condition.At this stage, also deposited in terms of deep soil gas sampling
In some problems：
First, traditional soil gas acquisition method such as plenum chamber method meeting retained atmosphere component in gatherer process, no
It truly can completely reflect the situation of gas in soil environment, larger error can be brought to result of study.
Secondly, existing soil profile gas sampler air admission hole is easily blocked by soil particle, and what is had takes wrapped yarns
The measure of cloth, but rubbed unavoidably in the placement process of section gas sampler and shift gauze, influence section gas
The collection of sample.Soil gas is vulnerable to the interference of soil moisture in gatherer process simultaneously.
Finally, nowadays there is the relatively small equipment of some errors, but need to provide power equipment, the even needs having
Aspiration pump, this make it that the cost of whole instrument is higher, complicated, cumbersome, inconvenient to carry, is unsuitable for field soil gas
The sampling research of body.
The content of the invention
It is an object of the invention to the shortcoming and defect for overcoming above-mentioned prior art, there is provided a kind of simple type deep SOIL GAS
Sampler body device and its method for sampling.The accuracy of experiment is improved, the error of experiment is reduced.Available for environmentology, ecology, geography
The multi-disciplinary field soil gas collecting research such as, agrology.
The present invention is achieved through the following technical solutions：
The discharge 1 of several passages 6, air guide is distributed with a kind of simple type deep soil gas sampler, including perisporium
Pipe 2；One end of the discharge 1 is sealed end, and other end connection airway tube 2 is provided with triple valve 7 in the end of airway tube 2；
The internal perisporium of the discharge 1 is pasted with one layer of waterproof ventilated membrane 3.
6 points of the passage is two groups and is linearly arranged on the tube wall of the opposite sides of discharge 1；Their straight line is each other
It is parallel, and arranged along the length direction of discharge 1.
The discharge 1 is polyfluortetraethylene pipe；Airway tube 2 is silica gel hose.
The sealed end of the discharge 1 is provided with rubber stopper 4.
The discharge 1 is connected by pipe cap 5 with airway tube 2；Pipe cap 5 is spiral fastening type structure, is easy to and airway tube 2
Connection and dismounting；The section of discharge 1 is circular tubular structure, has a diameter larger than the diameter of airway tube 2；Pipe cap 5 is installed
In the medium position of the end wall of discharge 1.
The external diameter of the discharge 1 is 21mm, and internal diameter is 15mm, and wall thickness is 3mm, a length of 15mm.
The waterproof ventilated membrane 3 is poly tetrafluoroethylene, and membrane aperture is 3 μm, and supporting layer is PET-PE.
The aperture of the passage 6 is 0.5mm.
A kind of deep soil gas sampling method, it comprises the following steps：
Step one：The testing procedure of simple type deep soil gas sampler, is specifically that discharge 1 is put into water, uses
Syringe extracts its interior gas at triple valve 7, if entering syringe without moisture, illustrates to reach water proofing property requirement；Then
Gas is injected into pipe with syringe, if there are a large amount of bubbles to emerge in water, illustrates to reach gas permeability requirements；
Step 2：A groove anyhow is excavated in the experimental plot chosen, discharge 1 is placed in it anyhow, in straight
Line arrangement passage 6 length direction parallel to earth's surface, i.e., the two row's passages 6 linearly arranged in same level position,
And with plane-parallel or parallel with earth's surface, then original soil is backfilled again, discharge 1 is filled in soil, and with surrounding
Soil close proximity；Airway tube 2 is stretched out in outside soil surface；
Step 3：After discharge 1 is placed, syringe is connected on the flexible pipe 8 of triple valve 7, starts to vacuumize, until note
When the piston of emitter extracts motionless, triple valve 7 is closed, breaks off discharge 1 and is circulated with outside air；Gas in syringe is arranged
Go out；
Step 4：Due to there is negative pressure in discharge 1, soil gas can be automatically flowed into discharge, treat the balance of discharge 15
To after 20 minutes, syringe is connected on the flexible pipe 8 on triple valve, triple valve is opened, gas in discharge 1 is extracted；
Step 5：The gas that step 4 syringe is collected is squeezed among aluminium foil gas sampling bag, is put in incubator,
And take back laboratory supply chromatograph.
The present invention has the following advantages and effect relative to prior art：
Sampler can be arranged to different soil depth by this sampler according to test requirements document, gather different depth soil layer gas
Body, to determine its gas concentration, so that different depth soil gas distribution characteristics is verified, estimation different depth soil gas
Concentration gradient and diffusion rate.
The internal perisporium of this sampler discharge is pasted with one layer of waterproof ventilated membrane, and this double-layer nested type structure can be achieved
The waterproof collection of the larger water paddy soil gas of soil gas, especially humidity.
This sampler has good sealing property, and ambient atmosphere environment disturbs almost nil to it, experimental result error
It is small and precision is high.
This sampler still this device can be used to gather soil gas for the higher soil of moisture content.
This sampler designs advantages of simple, cheap, easy to operate, it is easy to carry, and is not required to aspiration pump or power system
Deng large scale equipment, it is adaptable to which field sampling is studied.
Different from conventional soil gas sampler, this sampler can be according to its modes of emplacement (traverse is placed vertically) no
With the gas for gathering a certain gas for determining depth either a certain depth bounds, operation is flexible.
This sampler is applicable to Soil Trace Gases discharge, ecosystem evaluation, soil during soil environment monitoring etc. is studied
The collection of earth gas.Be particularly suitable for use in the collection of different depth soil gas and the research of change in concentration.
Brief description of the drawings
Fig. 1 is schematic appearance of the invention.
Fig. 2 is the diagrammatic cross-section of the present invention.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As illustrated in fig. 1 and 2.It is distributed with the invention discloses a kind of simple type deep soil gas sampler, including perisporium
Discharge 1, the airway tube 2 of several passages 6；One end of the discharge 1 is sealed end, and other end connection airway tube 2 is being led
The end of tracheae 2 is provided with triple valve 7；The internal perisporium of the discharge 1 is pasted with one layer of waterproof ventilated membrane 3.
6 points of the passage is two groups and is linearly arranged on the tube wall of the opposite sides of discharge 1；Their straight line is each other
It is parallel, and arranged along the length direction of discharge 1.The discharge 1 is polyfluortetraethylene pipe；Airway tube 2 is silica gel hose；It is described
The sealed end of discharge 1 is provided with rubber stopper 4.
The discharge 1 is connected by pipe cap 5 with airway tube 2；Pipe cap 5 is spiral fastening type structure, is easy to and airway tube 2
Connection and dismounting；The section of discharge 1 is circular tubular structure, has a diameter larger than the diameter of airway tube 2；Pipe cap 5 is installed
In the medium position of the end wall of discharge 1.
The external diameter of the discharge 1 is 21mm, and internal diameter is 15mm, and wall thickness is 3mm, a length of 15mm；The hole of the passage 6
Footpath is 0.5mm.Depending on specific size can be required according to concrete application.
The waterproof ventilated membrane 3 is poly tetrafluoroethylene, and membrane aperture is 3 μm, and supporting layer is PET-PE.
Deep soil gas sampling method of the present invention, can be achieved by the steps of：
Step one：The testing procedure of simple type deep soil gas sampler, is specifically that discharge 1 is put into water, uses
Syringe extracts its interior gas at triple valve 7, if entering syringe without moisture, illustrates to reach water proofing property requirement；Then
Gas is injected into pipe with syringe, if there are a large amount of bubbles to emerge in water, illustrates to reach gas permeability requirements；
Step 2：A groove anyhow is excavated in the experimental plot chosen, discharge 1 is placed in it anyhow, in straight
Line arrangement passage 6 length direction parallel to earth's surface, i.e., the two row's passages 6 linearly arranged in same level position,
And with plane-parallel or parallel with earth's surface, then original soil is backfilled again, discharge 1 is filled in soil, and with surrounding
Soil close proximity；Airway tube 2 is stretched out in outside soil surface；
Step 3：After discharge 1 is placed, syringe is connected on the flexible pipe 8 of triple valve 7, starts to vacuumize, until note
When the piston of emitter extracts motionless, triple valve 7 is closed, breaks off discharge 1 and is circulated with outside air；Gas in syringe is arranged
Go out；
Step 4：Due to there is negative pressure in discharge 1, soil gas can be automatically flowed into discharge, treat the balance of discharge 15
To after 20 minutes, syringe is connected on the flexible pipe 8 on triple valve, triple valve is opened, gas in discharge 1 is extracted；
Step 5：The gas that step 4 syringe is collected is squeezed among aluminium foil gas sampling bag, is put in incubator,
And take back laboratory supply chromatograph.
As described above, the present invention can be better realized.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With the change made under principle, modification, replacement, combine, simplify, should be equivalent substitute mode, be included in the present invention
Within protection domain.
Claims (9)
1. a kind of simple type deep soil gas sampler, it is characterised in that：The collection of several passages (6) is distributed with including perisporium
Tracheae (1), airway tube (2)；One end of the discharge (1) is sealed end, other end connection airway tube (2), in airway tube (2)
End triple valve (7) is installed；The internal perisporium of the discharge (1) is pasted with one layer of waterproof ventilated membrane (3).
2. simple type deep soil gas sampler according to claim 1, it is characterised in that：The passage (6) is divided into
Two groups are linearly arranged on the tube wall of discharge (1) opposite sides；Their straight line is parallel to each other, and long along discharge (1)
Spend direction arrangement.
3. simple type deep soil gas sampler according to claim 2, it is characterised in that：The discharge (1) is poly-
Tetrafluoroethene pipe；Airway tube (2) is silica gel hose.
4. simple type deep soil gas sampler according to claim 3, it is characterised in that：The discharge (1) it is close
End-blocking is provided with rubber stopper (4).
5. the simple type deep soil gas sampler according to any one of Claims 1-4, it is characterised in that：The collection
Tracheae (1) is connected by pipe cap (5) with airway tube (2)；Pipe cap (5) is spiral fastening type structure, is easy to be connected with airway tube (2)
With dismounting；Discharge (1) section is circular tubular structure, has a diameter larger than the diameter of airway tube (2)；Pipe cap (5) is pacified
Mounted in the medium position of discharge (1) end wall.
6. simple type deep soil gas sampler according to claim 5, it is characterised in that：Outside the discharge (1)
Footpath is 21mm, and internal diameter is 15mm, and wall thickness is 3mm, a length of 15mm.
7. simple type deep soil gas sampler according to claim 5, it is characterised in that：The waterproof ventilated membrane (3)
For poly tetrafluoroethylene, membrane aperture is 3 μm, and supporting layer is PET-PE.
8. simple type deep soil gas sampler according to claim 5, it is characterised in that：The hole of the passage (6)
Footpath is 0.5mm.
9. a kind of deep soil gas sampling method, it is characterised in that deep using plain type any one of claim 1 to 8
Layer soil gas sampler realizes that it comprises the following steps：
Step one：The testing procedure of simple type deep soil gas sampler, is specifically that discharge (1) is put into water, with note
Emitter extracts its interior gas at triple valve (7) place, if entering syringe without moisture, illustrates to reach water proofing property requirement；Then
Gas is injected into pipe with syringe, if having bubble to emerge in water, illustrates to reach gas permeability requirements；
Step 2：A groove anyhow is excavated in the experimental plot chosen, discharge (1) is placed in it anyhow, linearly
The length direction of the passage (6) of arrangement is parallel to earth's surface, i.e., the two row's passages (6) linearly arranged are in same level position
Put, and with plane-parallel or parallel with earth's surface, then original soil is backfilled again, discharge (1) is filled in soil, and with
Surrounding soil close proximity；Airway tube (2) is stretched out in outside soil surface；
Step 3：After discharge (1) is placed, syringe is connected on the flexible pipe of triple valve (7) (8), starts to vacuumize, until
When the piston of syringe extracts motionless, triple valve (7) is closed, breaks off discharge (1) and is circulated with outside air；By gas in syringe
Body is discharged；
Step 4：Due to having negative pressure in discharge (1), soil gas can be automatically flowed into discharge, treat discharge (1) balance 5
To after 20 minutes, on the flexible pipe (8) that syringe is connected on triple valve, triple valve is opened, discharge (1) interior gas is extracted；
Step 5：The gas that step 4 syringe is collected is squeezed among aluminium foil gas sampling bag, is put in incubator, and band
Return laboratory supply chromatograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127750.9A CN107063775A (en) | 2017-03-06 | 2017-03-06 | A kind of simple type deep soil gas sampler and its method for sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127750.9A CN107063775A (en) | 2017-03-06 | 2017-03-06 | A kind of simple type deep soil gas sampler and its method for sampling |
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| CN201710127750.9A Pending CN107063775A (en) | 2017-03-06 | 2017-03-06 | A kind of simple type deep soil gas sampler and its method for sampling |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966331A (en) * | 2017-10-23 | 2018-04-27 | 中国科学院东北地理与农业生态研究所 | The harvester and method that field test soil-plant system organic pollution soil-gas exchanges |
| CN108332395A (en) * | 2018-02-06 | 2018-07-27 | 马水军 | A kind of portable Multifunctional environment monitoring device |
| CN108613846A (en) * | 2018-04-24 | 2018-10-02 | 上海天谱安全技术咨询有限公司 | A kind of atmosphere sampling instrument |
| CN108844789A (en) * | 2018-06-29 | 2018-11-20 | 农业部环境保护科研监测所 | Soil gas acquisition device and soil gas acquisition system |
| CN109682649A (en) * | 2019-01-22 | 2019-04-26 | 陕西师范大学 | Gas concentration is layered rapid detection system between a kind of soil aperture |
| CN110988287A (en) * | 2019-12-23 | 2020-04-10 | 中国科学院合肥物质科学研究院 | Water-gas separation device suitable for deep water high-pressure environment |
| CN111089760A (en) * | 2020-02-20 | 2020-05-01 | 中国科学院寒区旱区环境与工程研究所 | Device for collecting gas in soil by balance method |
| CN112129591A (en) * | 2020-09-24 | 2020-12-25 | 辽宁大学 | Soil gas VOCs passive acquisition device and soil gas VOCs acquisition and detection method |
| CN113049757A (en) * | 2021-03-31 | 2021-06-29 | 重庆文理学院 | Continuous piston type air distribution device for experiment |
| CN113447635A (en) * | 2021-05-11 | 2021-09-28 | 江西农业大学 | Device for measuring release rate of greenhouse gases in different depths of potted soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107966331A (en) * | 2017-10-23 | 2018-04-27 | 中国科学院东北地理与农业生态研究所 | The harvester and method that field test soil-plant system organic pollution soil-gas exchanges |
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| CN110988287B (en) * | 2019-12-23 | 2022-08-26 | 中国科学院合肥物质科学研究院 | Water-gas separation device suitable for deep water high-pressure environment |
| CN110988287A (en) * | 2019-12-23 | 2020-04-10 | 中国科学院合肥物质科学研究院 | Water-gas separation device suitable for deep water high-pressure environment |
| CN111089760A (en) * | 2020-02-20 | 2020-05-01 | 中国科学院寒区旱区环境与工程研究所 | Device for collecting gas in soil by balance method |
| CN112129591A (en) * | 2020-09-24 | 2020-12-25 | 辽宁大学 | Soil gas VOCs passive acquisition device and soil gas VOCs acquisition and detection method |
| CN113049757A (en) * | 2021-03-31 | 2021-06-29 | 重庆文理学院 | Continuous piston type air distribution device for experiment |
| CN113049757B (en) * | 2021-03-31 | 2022-10-21 | 重庆文理学院 | Continuous piston type air distribution device for experiment |
| CN113447635A (en) * | 2021-05-11 | 2021-09-28 | 江西农业大学 | Device for measuring release rate of greenhouse gases in different depths of potted soil |
| CN113447635B (en) * | 2021-05-11 | 2023-09-29 | 江西农业大学 | Potted plant soil greenhouse gas release rate measuring device with different depths |
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Application publication date: 20170818 |